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. 2020 Mar 3;11:196. doi: 10.3389/fpls.2020.00196

FIGURE 4.

FIGURE 4

Plastid ultrastructure in first leaf primordia of dark-forced rosemary (R. officinalis) shoots, i.e., newly developed shoots formed on adult plants during 2 weeks of growth in complete darkness. Plastids are from leaf mesophyll cell (A), epidermis cell (B), and peltate glandular hairs (C–F). Plastid(s) from basal cell (C), stalk cells (D,E), head cells (F,G). Scale bar: 0.5 μm. DI, dense plastid inclusion; Cw, cell wall; N, nucleus; V, vacuole; asterisk, electron-dense membrane bound inclusion; black arrow, plastoglobule-like electron-transparent inclusion; black arrowhead, tubuloreticular prolamellar body-like membrane; white arrow, peripheral vesicle or invagination of the envelope; white arrowhead, thylakoid membrane.